TWI414743B - 7.62 mm general machine gun gun barrel insulation structure - Google Patents

7.62 mm general machine gun gun barrel insulation structure Download PDF

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Publication number
TWI414743B
TWI414743B TW100107464A TW100107464A TWI414743B TW I414743 B TWI414743 B TW I414743B TW 100107464 A TW100107464 A TW 100107464A TW 100107464 A TW100107464 A TW 100107464A TW I414743 B TWI414743 B TW I414743B
Authority
TW
Taiwan
Prior art keywords
barrel
heat shields
heat
machine gun
driving
Prior art date
Application number
TW100107464A
Other languages
Chinese (zh)
Other versions
TW201237349A (en
Inventor
Peng Hsiang Chang
Chin Kai Kuo
Original Assignee
Military Academy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Military Academy filed Critical Military Academy
Priority to TW100107464A priority Critical patent/TWI414743B/en
Publication of TW201237349A publication Critical patent/TW201237349A/en
Application granted granted Critical
Publication of TWI414743B publication Critical patent/TWI414743B/en

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Abstract

A thermal insulation cover structure of 7.62mm general-purpose machine gun comprises two thermal insulation covers pivotally mounted on opposite sides of a rail at a front end of a chassis, and springs that are provided to drive the two thermal insulation cover to remain at a closed position under a normal condition. Two ends of each thermal insulation cover respectively form a first guide and a second guide. A first driving block that corresponds to the first guide and a second driving block that corresponds to the second guide are provided on a barrel. To disassemble/assemble the barrel, the driving blocks on the barrel automatically open the thermal insulation covers to facilitate mounting/dismounting of the barrel.

Description

7.62 mm universal machine gun barrel heat shield structure

The present invention relates to weapon systems, and more particularly to a barrel heat shield structure for a 7.62 mm universal machine gun.

The barrel of the machine gun after high-speed shooting has a problem of excessive temperature. When the temperature of the barrel is too high, the following problems will occur:

1. Affecting shooting: When the temperature of the barrel is too high, the hardness of the steel will be lower than the hardness of the bullet. Wear and erosion will occur inside the barrel and cause damage to the barrel, which will affect the accuracy of shooting. In severe cases, even a blast will occur.

2. Scalded personnel: The overheated barrel will conduct heat to the adjacent object through heat conduction and heat radiation. The hand is usually the first part that will become hot and difficult to hold, and 40 degrees Celsius is generally recognized. The upper temperature limit. Therefore, if the barrel is not properly protected from high heat, and the person does not pay attention to the barrel that is too hot, it is likely to cause burns.

For problem 1, the general machine gun manual will require the shooter to regularly replace the overheated barrel. For problem 2, some machine guns provide a heat shield design to protect the shooter from overheating. tube.

However, a machine gun with a heat shield design generally needs to remove the heat shield when replacing the barrel, or at least remove the heat shield. Therefore, when the heat shield is moved, the problem of burns may be caused by the person touching the barrel. In addition, the general heat shield is often designed with the barrel, causing both the main barrel and the prepared barrel to have a gun. The situation of the heat shield of the tube causes the battlefield soldiers to carry unnecessary loads.

In summary, it can be seen that the barrel must be replaced at a high speed when the machine gun is fired at a high speed, and the personnel must be prevented from being burned when replacing the gun. Therefore, the design of the heat shield is necessary. However, the traditional heat shield design has not effectively achieved this goal, and further design and improvement are needed.

The main object of the present invention is to provide a 7.62 mm universal machine gun replacement barrel and barrel heat shield structure. Under normal circumstances, the heat shield can protect personnel from contacting the overheated barrel; When the pipe is in use, it will not cause personnel to touch the barrel.

In order to achieve the foregoing object, the present invention provides a barrel heat shield structure of a 7.62 mm universal machine gun, wherein the universal machine gun has a casing and a barrel; the lower end of the casing has a grip and a front end of the grip Having a trigger and a guard bow, the front end of the chassis has a barrel connection port, and has a slide rail at the front end of the barrel connection port; one end of the barrel is connected to the barrel connection port of the chassis; The barrel heat shield structure comprises: two heat shields pivotally disposed on opposite sides of the slide rail to move between a closed position and an open position; when the two heat shields are located in the closed position, the a second heat shield is disposed above the slide rail, and when the two heat shields are in the open position, the heat shields are outwardly moved; and the first heat shields are respectively provided with a first guide portion at two ends thereof And a second guiding portion; two springs respectively acting on the two heat shields to drive the two heat shields to move toward the closed position Moving the second heat shield in the closed position in a normal state; and providing a first driving portion corresponding to the first guiding portion and a corresponding portion corresponding to the second guiding portion on the barrel a driving portion; wherein, when the barrel is disassembled, the first driving portion on the barrel contacts the first guiding portion of the two heat shields to move the two heat shields toward the open position When the barrel is installed, the second driving portion on the barrel contacts the second guiding portion of the two heat shields to move the two heat shields in the direction of the open position.

In another embodiment, the barrel heat shield structure includes: two heat shields pivotally disposed on opposite sides of the slide rail to move between a closed position and an open position; When the cover is in the closed position, the two heat shields are shielded above the slide rails, and when the two heat shields are in the open position, the heat shields are moved outward; and a transmission device is used to When the barrel rotates, the two heat shields are moved between the open position and the closed position.

Thereby, when one end of the barrel is connected to the barrel connection port of the chassis, and the barrel is rotated to lock the barrel, the two heat shields are driven to the closed position through the transmission; When the barrel is untwisted, the two heat shields are driven to the open position through the transmission.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view showing the appearance of a 7.62 mm universal machine gun provided in a first preferred embodiment of the present invention. The main components of the universal machine gun are: a chassis 10, a stock 12, a rear end of the chassis 10, and a barrel 14 connected to the The front end of the chassis 10.

2 shows an exploded view of the barrel heat shield structure 1 of a 7.62 mm universal machine gun according to a preferred embodiment of the present invention, wherein the front end of the cabinet 10 has a barrel connection port 22 and a gas cylinder 24. The barrel 14 is coupled to the barrel connection port 22. Above the gas cylinder 24, there is a slide rail 26 in front of the barrel connection port 22. The slide rail 26 is a concave curved surface formed by a plurality of vertical strips as a path for moving the barrel 14 when the barrel 14 is mounted. A pair of lugs 30 are provided on each side of the slide rail 26 for pivoting the heat shield 32.

The two heat shields 32 are a pair of symmetrical arc-shaped plates having a plurality of holes for heat dissipation. The outer ends of the two heat shields 32 are pivotally connected to the two sides of the slide rail 26 by the two pins 34 passing through the lugs 30 and the heat shield 32. Thereby, the two heat shields 32 can be moved inwardly to the free end contact, covering the upper side of the slide rail 26 to reach a closed position; or moving outward to reach an open position. The two pins 34 are respectively provided with a spring 36 for acting on the two heat shields 32, so that the two heat shields 32 are normally held in the closed position. The rear end of the two heat shields 32 (near the chassis 10) is provided with a slope to form a first guiding portion 38. Similarly, the front end of the two heat shields 32 (away from the chassis 10) is provided with a slope. To form a second guiding portion 40.

The barrel 14 has a handle 42. A first driving portion 44 and a second driving portion 46 are disposed at the handle 42 connecting the barrel 14. The first driving portion 44 is a triangular block corresponding to the first guiding portion 38, and is located at a side of the handle 42 facing the front end of the barrel 14 (having one end of the fire hood 48); the second driving portion 46 A triangular block corresponding to the second guiding portion 40 is located on one side of the handle 42 toward the rear end of the barrel 14 (connected to one end of the chassis 10), the tip of which is directed to the rear end of the barrel 14.

If the barrel 14 needs to be disassembled, the barrel 14 is first rotated at an angle (Figs. 3 to 4) to disengage the barrel 14 so that the barrel 14 can be separated from the barrel connection 22; Barrel 14. At this time, the first driving portion 44 on the barrel 14 contacts the first guiding portion 38 at the rear end of the two heat shields 32, as shown in FIG. 5, to push the two heat shields 32 outward to the open position. Therefore, the handle 42 can pass through the two heat shields 32, and the barrel 14 can be smoothly removed.

Referring to Figure 6, when the barrel 14 is to be installed, the rear end of the barrel 14 is placed on the slide rail 26 and moved rearward. At this time, the second driving portion 46 on the barrel 14 first contacts the second guiding portion 40 at the rear end of the two heat shields 32 to push the two heat shields 32 outward to the open position. The 42 can pass through the two heat shields 32 until the rear end of the barrel 14 is connected to the barrel connection port 22 (Fig. 4), and after the barrel 14 is rotated at an angle (Fig. 3), the barrel 14 is locked. At the barrel connection port 22, the installation of the barrel program is completed.

According to the above description, the barrel heat shield structure provided by the first preferred embodiment of the present invention can protect the personnel from being burned by the barrel under normal conditions; and when replacing the barrel, Personnel are completely out of contact with the heat shield and can change the barrel in the most straightforward and simple way.

Referring to FIG. 7 and FIG. 8 , the barrel heat shield structure 2 of the 7.62 mm universal machine gun provided by the second preferred embodiment of the present invention is similar to the first embodiment. The two heat shields 50 are pivoted on both sides of the slide rail 52. The second embodiment is characterized in that a transmission is provided instead of the design of the driving portion and the guiding portion of the first embodiment. The transmission allows the heat shield 50 to be moved between the open position and the closed position when the barrel 54 is rotated.

The transmission device includes: a ring gear 56 disposed at a proper position of the barrel 54; a lateral slot on the vertical rail of the slide rail 52, wherein a shaft 58 is mounted; a worm 60 is disposed at a middle portion of the shaft 58; A helical gear 62, 64 is disposed at each end, and a helical gear 68, 70 is disposed on the pin 66 of the pivotal heat shield 50; wherein, when the barrel 54 is in a specific position, the ring tooth on the barrel 56 will mesh with the worm 60; in the normal state, the helical gear 62 meshes with the helical gear 68; the helical gear 64 meshes with the helical gear 70. It is to be particularly noted that the helical gear pairs 62, 68 are opposite to the teeth of the helical gear pairs 64, 70, whereby the rotational direction of the helical gears 68, 70 is reversed when the worm 60 is driven to rotate. of.

In a state where the barrel 54 has been mounted on the machine gun, as shown in Fig. 7, the two heat shields 50 are in a closed state. To disassemble the barrel 54, as previously mentioned, the barrel 54 is first rotated an angle. At this time, the worm 60 is rotated and transmitted through the shaft 58 and the pair of helical gears 62, 68 and 64, 70 to move the two heat shields 50 outward to the open position, as shown in FIG. The barrel 54 can be removed.

In the state where the barrel is removed, the two heat shields 50 are held in the open position (Fig. 8), so that a new barrel 54 can be replaced at any time. When the rear end of the barrel 54 is connected to the barrel connection, the ring teeth 56 on the barrel 54 and the worm 60 is engaged, and when the barrel 54 is rotated to perform the locking process, the two heat shields 50 are moved to the closed position by the transmission of the worm 60 and the pair of helical gears 62, 68 and 64, 70 (Fig. 7 ). That is, when the barrel 54 is locked to the machine gun, the two heat shields 50 remain in the closed position.

The structure provided by the second embodiment is the same as that of the first embodiment. The two heat shields protect the personnel from being burnt by the barrel under normal conditions; in addition, when the barrel is replaced, the person does not touch the heat insulation at all. Cover and replace the barrel in the most straightforward and simple way.

The above is only a preferred embodiment of the present invention, and equivalent structural changes to the scope of the present invention and the scope of the claims are intended to be included in the scope of the present invention.

1‧‧‧General machine gun barrel heat shield structure

10‧‧‧Chassis

12‧‧‧ Stock

14‧‧‧ barrel

22‧‧‧Bob connection

24‧‧ ‧ gas cylinder

26‧‧‧Slide rails

30‧‧‧ lugs

32‧‧‧heat shield

34‧‧ ‧ sales

36‧‧‧ Spring

38‧‧‧First Guidance

40‧‧‧Second guidance

42‧‧‧提提

44‧‧‧First Drive Department

46‧‧‧Second drive department

48‧‧‧Fire shield

2‧‧‧General machine gun barrel heat shield structure

50‧‧‧heat shield

52‧‧‧Slide rails

54‧‧‧ barrel

56‧‧‧ ring teeth

58‧‧‧Axis

60‧‧‧ worm

62,64,68,70‧‧‧ helical gear

66‧‧ ‧ sales

1 is a perspective view of a general machine gun according to a first preferred embodiment of the present invention; FIG. 2 is an exploded view of the first preferred embodiment of the present invention; FIG. 3 to FIG. 5 are schematic views showing the installation of a barrel; Figure 7 is a cross-sectional view showing the first preferred embodiment of the present invention, showing the state in which the heat shield is in the open position before the barrel is rotated; and Figure 8 is a cross-sectional view showing the gun according to the first preferred embodiment of the present invention. After the tube is rotated The state in which the heat shield is in the closed position.

1. . . General machine gun barrel heat shield structure

10. . . Chassis

12. . . Buttstock

14. . . barrel

twenty two. . . Barrel connector

twenty four. . . Gas cylinder

26. . . Slide rail

30. . . Lug

32. . . Heat shield

34. . . pin

36. . . spring

42. . . Handle

44. . . First drive

46. . . Second drive

48. . . Fire cover

Claims (4)

  1. 62 mm universal machine gun barrel heat shield structure, wherein the universal machine gun has a chassis and a barrel; the lower end of the chassis has a grip, the front end of the grip has a trigger and a guard bow, and the chassis The front end has a barrel connection port, and has a slide rail at the front end of the barrel connection port; one end of the barrel is connected to the barrel connection port of the chassis; the barrel heat shield structure comprises: two heat insulation a cover pivotally disposed on both sides of the slide rail to move between a closed position and an open position; when the two heat shields are in the closed position, the two heat shields are shielded above the slide rail When the two heat shields are in the open position, the two heat shields are outwardly moved; the two heat shields are respectively provided with a first guiding portion and a second guiding portion; Acting on the two heat shields to drive the two heat shields to move in the direction of the closed position, so that the two heat shields are kept in the closed position under normal conditions; and a corresponding to the first one is disposed on the barrel a first driving portion of the guiding portion and a corresponding to the second guiding portion a second driving portion; thereby, when the barrel is disassembled, the first driving portion on the barrel contacts the first guiding portion of the two heat shields to move the two heat shields toward the open position Moving; when the barrel is installed, the second driving portion on the barrel contacts the second guiding portion of the two heat shields to move the two heat shields in the direction of the open position.
  2. According to the barrel heat shield structure of the 7.62 mm universal machine gun described in claim 1, wherein the rear ends of the two heat shields each have a slope to constitute the first a guiding portion; the first driving portion is a triangular block.
  3. The barrel heat shield structure of the 7.62 mm universal machine gun according to the first aspect of the patent application, wherein the front ends of the two heat shields each have a slope to constitute the second guide portion; the second drive portion is A triangular block.
  4. The barrel heat shield structure of the 7.62 mm universal machine gun according to the first aspect of the patent application, wherein the barrel has a handle, and the first driving portion and the second driving portion are disposed on the handle The sides of the barrel are connected.
TW100107464A 2011-03-04 2011-03-04 7.62 mm general machine gun gun barrel insulation structure TWI414743B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW100107464A TWI414743B (en) 2011-03-04 2011-03-04 7.62 mm general machine gun gun barrel insulation structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW100107464A TWI414743B (en) 2011-03-04 2011-03-04 7.62 mm general machine gun gun barrel insulation structure

Publications (2)

Publication Number Publication Date
TW201237349A TW201237349A (en) 2012-09-16
TWI414743B true TWI414743B (en) 2013-11-11

Family

ID=47223103

Family Applications (1)

Application Number Title Priority Date Filing Date
TW100107464A TWI414743B (en) 2011-03-04 2011-03-04 7.62 mm general machine gun gun barrel insulation structure

Country Status (1)

Country Link
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068992A (en) * 1990-08-13 1991-12-03 Velezis George A Forearm assembly
US6609321B2 (en) * 2001-10-16 2003-08-26 First Samco Inc. Forearm handguard for a rifle
CN1886632A (en) * 2003-11-24 2006-12-27 嘎摩工业有限公司 Protective cover for sporting rifles
GB2455760A (en) * 2007-12-20 2009-06-24 Bruegger & Thomet Ag Pivotally hinged rail handguard
EP2141441A2 (en) * 2008-07-01 2010-01-06 Adcor Industries, Inc. Firearm including improved hand guard
WO2010042262A2 (en) * 2008-07-21 2010-04-15 Grauer Systems, Llc Firearm grip

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068992A (en) * 1990-08-13 1991-12-03 Velezis George A Forearm assembly
US6609321B2 (en) * 2001-10-16 2003-08-26 First Samco Inc. Forearm handguard for a rifle
CN1886632A (en) * 2003-11-24 2006-12-27 嘎摩工业有限公司 Protective cover for sporting rifles
GB2455760A (en) * 2007-12-20 2009-06-24 Bruegger & Thomet Ag Pivotally hinged rail handguard
EP2141441A2 (en) * 2008-07-01 2010-01-06 Adcor Industries, Inc. Firearm including improved hand guard
WO2010042262A2 (en) * 2008-07-21 2010-04-15 Grauer Systems, Llc Firearm grip

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TW201237349A (en) 2012-09-16

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